<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        #loadingBox {
            width: 100px;
            height: 40px;
            position: absolute;
            top: 50%;
            left: 50%;
            text-align: center;
        }
        #loadingBox p {
            margin-top: 2em;
            margin-left: -10px;
            color: rgba(33, 150, 244, .40);
        }
        .loader-walk {
            -webkit-transform: translate(-50%, -50%);
            -ms-transform: translate(-50%, -50%);
            transform: translate(-50%, -50%);
        }
        .loader-walk > div {
            content: "";
            width: 20px;
            height: 20px;
            background: #2196f3;
            border-radius: 100%;
            position: absolute;
            -webkit-animation: animate 2s linear infinite;
            animation: animate 2s linear infinite;
        }
        .loader-walk > div:nth-of-type(1) {
            -webkit-animation-delay: -0.4s;
            animation-delay: -0.4s;
        }
        .loader-walk > div:nth-of-type(2) {
            -webkit-animation-delay: -0.8s;
            animation-delay: -0.8s;
        }
        .loader-walk > div:nth-of-type(3) {
            -webkit-animation-delay: -1.2s;
            animation-delay: -1.2s;
        }
        .loader-walk > div:nth-of-type(4) {
            -webkit-animation-delay: -1.6s;
            animation-delay: -1.6s;
        }
        @-webkit-keyframes animate {
            0% {
                left: 100px;
                top: 0;
            }
            80% {
                left: 0;
                top: 0;
            }
            85% {
                left: 0;
                top: -20px;
                width: 20px;
                height: 20px;
            }
            90% {
                width: 40px;
                height: 15px;
            }
            95% {
                left: 100px;
                top: -20px;
                width: 20px;
                height: 20px;
            }
            100% {
                left: 100px;
                top: 0;
            }
        }
        @keyframes animate {
            0% {
                left: 100px;
                top: 0;
            }
            80% {
                left: 0;
                top: 0;
            }
            85% {
                left: 0;
                top: -20px;
                width: 20px;
                height: 20px;
            }
            90% {
                width: 40px;
                height: 15px;
            }
            95% {
                left: 100px;
                top: -20px;
                width: 20px;
                height: 20px;
            }
            100% {
                left: 100px;
                top: 0;
            }
        }
    </style>
</head>
<body>
<div id="loadingBox">
    <div class="loader-walk">
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </div>
</div>
</body>
</html>